Weakly Bound Li He $$_\mathbf{2 }$$ 2 Molecules

Prediction of a weakly bound excited state in the 4 He 2 – 7 Li molecule

Calculations of the binding energies of weakly bound He–He–H, He–He–H− and He–H–H molecules

We searched for the existence of weakly bound He–He–H, He–He–H− and He–H– H molecules where the binding energies are expected to be of the order of degrees Kelvin. By employing the best empirical interaction between each pair of particles, we solved the Schrödinger equation for the triatomic systems using hyperspherical coordinates in the adiabatic approximation. We found no bound states for 4H...

Probing weakly bound molecules with nonresonant light.

We show that weakly bound molecules can be probed by "shaking" in a pulsed nonresonant laser field. The field introduces a centrifugal term which expels the highest vibrational level from the potential that binds it. Our numerical simulations applied to the Rb(2) and KRb Feshbach molecules indicate that shaking by feasible laser pulses can be used to accurately recover the square of the vibrati...

Weakly bound triatomic He2Li and He2Na molecules

We study the existence of stable bound states of triatomic molecules containing two helium atoms and one alkali atom X (X = Li, Na) and examine the dependence of their binding energies on the mass of the constituent atoms. The three-body systems are solved within the adiabatic approximation in hyperspherical coordinates using the He–He and He–X pair van der Waals interactions that are available...

Coherent transfer of Ultracold Molecules: From weakly to deeply bound

In this thesis I report the coherent transfer of ultracold molecules from weakly to deeply bound states using two different techniques. While these transfers allow the manipulation of the internal quantum state of the molecules, their external state is determined by confining them in an optical lattice. This gives ultimate control over all molecular degrees of freedom and opens the way towards ...